/*!	 widget_canvaschooser.cpp
**	 Template File
**
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**	Copyright (c) 2007 Chris Moore
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
*/

#ifdef USING_PCH
#	include "pch.h"
#else
#ifdef HAVE_CONFIG_H
#	include <config.h>
#endif

#include <synfig/general.h>

#include "widgets/widget_canvaschooser.h"
#include <gtkmm/menu.h>
#include "app.h"

#include <gui/localization.h>

#endif

using namespace std;
using namespace etl;
using namespace synfig;
using namespace studio;

Widget_CanvasChooser::Widget_CanvasChooser():
    canvas_menu(NULL)
{ }

Widget_CanvasChooser::~Widget_CanvasChooser()
{ }

void
Widget_CanvasChooser::set_parent_canvas(synfig::Canvas::Handle x)
{
    assert(x);
    parent_canvas = x;
}

void
Widget_CanvasChooser::set_value_(synfig::Canvas::Handle data)
{
    set_value(data);
    activate();
}

void
Widget_CanvasChooser::on_changed()
{
    int i = get_active_row_number();

    if (i < 0 || i > (int)canvases.size()) {
        return;
    }

    // Check "Other..." item at the end
    if (i == (int)canvases.size()) {
        chooser_menu();
        return;
    }

    if (canvas != canvases[i]) {
        set_value_(canvases[i]);
    }
}

void
Widget_CanvasChooser::set_value(synfig::Canvas::Handle data)
{
    assert(parent_canvas);
    canvas = data;

    synfig::Canvas::Children::iterator iter;
    synfig::Canvas::Children &children(parent_canvas->children());
    String label;

    set_active(-1);
    remove_all();
    canvases.clear();

    if (canvas) {
        label = canvas->get_name().empty() ? canvas->get_id() : canvas->get_name();
        canvases.push_back(canvas);
        append(label);
    }

    for (iter = children.begin(); iter != children.end(); iter++)
        if (*iter != canvas) {
            label = (*iter)->get_name().empty() ? (*iter)->get_id() : (*iter)->get_name();
            canvases.push_back(*iter);
            append(label);
        }

    append(_("Other..."));

    if (canvas) {
        set_active(0);
    }
}

const etl::handle<synfig::Canvas> &
Widget_CanvasChooser::get_value()
{
    return canvas;
}

void
Widget_CanvasChooser::chooser_menu()
{
    String canvas_name;

    if (!App::dialog_entry(_("Choose canvas"),
                           _("Canvas Name: "),
                           canvas_name,
                           _("Cancel"),
                           _("Choose"))
       ) {
        // the user hit 'cancel', so set the parameter back to its previous value
        set_value_(canvas);
        return;
    }

    if (canvas_name == "") {
        App::dialog_message_1b(
            "ERROR",
            _("No canvas name was specified"),
            "details",
            _("Close"));

        set_value_(canvas);
        return;
    }

    Canvas::Handle new_canvas;

    try {
        String warnings;
        new_canvas = parent_canvas->find_canvas(canvas_name, warnings);
        set_value_(new_canvas);
    } catch (std::runtime_error x) {
        App::dialog_message_1b(
            "ERROR",
            String(_("(Exception Thrown) Error selecting canvas:\n\n")) + x.what(),
            "details",
            _("Close"));

        set_value_(canvas);
    } catch (...) {
        App::dialog_message_1b(
            "ERROR",
            _("Unknown Exception"),
            "details",
            _("Close"));

        set_value_(canvas);
    }
}